Hellek/Hellik Eivensen Sisjord to USA 1894

I am looking for 1865-1894 genealogy information on Hellek E. Sisjord and his brothers Andrew (Anders) and Ole, who came from Bø, Telemark, Norway, to the USA, departing from Oslo/Christiansand on July 28, 1894, and arriving in Halifax, Nova Scotia, Canada on August 10, 1894, on the s.s. Gothia. Hellek, Andrew and Ole's father's name was Eiven. Hellek was born around 1878, Ole around 1881, and Andrew around 1884, according to their ages stated on the ship's manifest. Hellek's wife's name was Mary Torstvedt, who came either from Oslo or "Torstvedt Village". Since the 1875 census has no information for Bø, Telemark, but the brothers (but not the father) emigrated prior to the 1900 census, I can find no sure information on the brothers or their parents. Any suggestions on where to find this information? Kara D. (Kosmatka) Ishii